/Engine/Source/Developer/TextureFormat/Public/ChildTextureFormat.h
bool CompressBaseImage ( const [FImage](API\Runtime\ImageCore\FImage) & InImage, const [FTextureBuildSettings](API\Developer\TextureCompressor\FTextureBuildSettings) & BuildSettings, const FIntVector3 & InMip0Dimensions, int32 InMip0NumSlicesNoDepth, int32 InMipIndex, int32 InMipCount, FStringView DebugTexturePathName, bool bImageHasAlphaChannel, [FCompressedImage2D](API\Developer\TextureCompressor\FCompressedImage2D) & OutCompressedImage ) const